381238728886 has 8 divisors (see below), whose sum is σ = 572004024480. Its totient is φ = 190570720728.

The previous prime is 381238728869. The next prime is 381238728887. The reversal of 381238728886 is 688827832183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×381238728886² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381238728887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24312061 + ... + 24327736.

It is an arithmetic number, because the mean of its divisors is an integer number (71500503060).

Almost surely, 2^381238728886 is an apocalyptic number.

381238728886 is a deficient number, since it is larger than the sum of its proper divisors (190765295594).

381238728886 is a wasteful number, since it uses less digits than its factorization.

381238728886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48643718.

The product of its digits is 49545216, while the sum is 64.

The spelling of 381238728886 in words is "three hundred eighty-one billion, two hundred thirty-eight million, seven hundred twenty-eight thousand, eight hundred eighty-six".